期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 91, 期 11, 页码 3756-3757出版社
WILEY
DOI: 10.1111/j.1551-2916.2008.02679.x
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资金
- Australian Research Council
Nb-doped rutile produced by sintering at 1400 degrees C in an air atmosphere led to a monotonic increase of the shortest tau(1) lifetime of the major spectral component from 0.17 to 0.25 ns in the Na-22 positron annihilation lifetime spectrum as the Nb doping level was progressively increased to 0.12 formula units, at which stage TiNb2O7 was observed as a second phase. The charge compensators for Nb5+ substituting for Ti4+ are indicated as cation vacancies on the basis of the increase of tau(1).
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